//
//  VisitorView.swift
//  新浪微博
//
//  Created by 焦林生 on 15/11/4.
//  Copyright © 2015年 焦林生. All rights reserved.
//

import UIKit

//访客视图 处理访客未登录视图
class VisitorView: UIView {
    

    
    //MARK: 设置视图信息
    func setupInfo(imageName:String?, title: String) {
    
        messageLabel.text = title
        //如果图片名称为nil 说明是首页,直接返回
        guard let imgName = imageName else{
        
            //播放动画
            startAnim()
            return
        }
        iconView.image = UIImage(named: imgName)
        //隐藏小房子
        homeIconView.hidden = true
        //将遮罩图像移动到底层
        sendSubviewToBack(markIconView)
        
        
        
    }
    
    //开启首页转轮动画
    private func startAnim() {
    
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.toValue = 2 * M_PI
        anim.repeatCount = MAXFLOAT
        anim.duration = 20
        
        //用在不断重复的动画上,当动画绑定的图层对应的视图被销毁,动画会自动销毁
        anim.removedOnCompletion = false
        
        //添加到图层
        iconView.layer.addAnimation(anim, forKey: nil)
    }


    //MARK: 设置界面
    //initWithFrame 归档  uiview的指定构造函数 使用纯代码开发时使用
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        setupUI()
    }
    
    //initWithCode  解档
    required init?(coder aDecoder: NSCoder) {
        
        super.init(coder: aDecoder)
        
        setupUI()
    }
    
    //MARK: 懒加载控件
    //图标,使用image 构造函数创建 imageview默认就是image的大小
    private lazy var iconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    
    //遮罩图像
    private lazy var markIconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    //小房子
    private lazy var homeIconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    //消息文字
    private lazy var messageLabel:UILabel = UILabel(title: "关注一些人，回这里看看有什么惊喜关注一些人，回这里看看有什么惊喜")
    
    //注册按钮
    lazy var registerButton: UIButton = UIButton(title: "注册", color: UIColor.orangeColor(), imageName: "common_button_white_disable")
  
    
    //登录按钮
     lazy var loginButton:UIButton = UIButton(title: "登陆", color: UIColor.darkGrayColor(), imageName: "common_button_white_disable")
   

}
//MARK: 设置界面
extension VisitorView {

    //设置界面
    private func setupUI() {
        
        //1 添加控件
        addSubview(iconView)
        addSubview(markIconView)
        addSubview(homeIconView)
        addSubview(messageLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        //2 设置自动布局
        /**
        *  添加约束需要添加到父视图 
        建议 子视图最好有一个统一的参照物
        */
        // translatesAutoresizingMaskIntoConstraints 默认是 true，支持使用 setFrame 的方式设置控件位置
        // false 支持使用自动布局来设置控件位置
        for v in subviews {
        
        
            v.translatesAutoresizingMaskIntoConstraints = false
            
        }
        
        //1> 图标
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1.0, constant: -60))
        //2>小房子
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: homeIconView, attribute: .CenterY, relatedBy: .Equal, toItem: iconView, attribute: .CenterY, multiplier: 1.0, constant: 0))
        //3>消息文字
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterX, relatedBy: .Equal, toItem: iconView, attribute: .CenterX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .CenterY, relatedBy: .Equal, toItem: iconView, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 224))
        addConstraint(NSLayoutConstraint(item: messageLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        //4>注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Left, relatedBy: .Equal, toItem: messageLabel, attribute: .Left, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        // 5> 登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Right, relatedBy: .Equal, toItem: messageLabel, attribute: .Right, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Top, relatedBy: .Equal, toItem: messageLabel, attribute: .Bottom, multiplier: 1.0, constant: 16))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginButton, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1.0, constant: 36))
        
        //6 遮罩图像
        /**
        *  VFL : 可视化格式语言
        H 水平方向
        V 垂直方向
        | 边界
        [] 包装控件名称的字符串
        () 定义控件的宽高,可以在metrics中指定
        views: 是一个字典 [名字: 控件名] -VFL 字符串表示控件的字符串
        metrics: 是一个字典 [名字:NSNumber] - VFL 字符串中表示某一个数值
        */

        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[mark]-0-|", options: [], metrics: nil, views: ["mark": markIconView]))

        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[mark]-(btnHeight)-[regButton]", options: [], metrics: ["btnHeight": -36], views: ["mark": markIconView, "regButton": registerButton]))
        
        //设置背景颜色
        backgroundColor = UIColor(white: 237.0 / 255.0, alpha: 1.0)
        
    }
}
